There is only one reliable way to compare windows and that is by asking for the NFRC* rating for each window that you are considering. NFRC labels are independently certified and rate the whole window performance by U-Factor and Solar Heat Gain Coefficient (SHGC). The lower these ratings are the better the window will perform. The priority of U-Factor versus SHGC depends on your climate. You should ignore all the sales hype and choose the best NFRC ratings for your climate at the best cost.

Energy Star is a window certification program administered by the Federal Government to help you select energy efficient windows optimized for your climate. A window must meet minimum performance criteria to qualify. These criteria are based on NFRC whole window performance ratings and are different for each of four climate zones as follows:

Northern Zone (blue): U-Factor of .30 or less, SHGC any
North Central Zone (yellow): U-Factor of .32 or less, SHGC of .40 or less
South Central Zone (orange): U-Factor of .35 or less, SHGC of .30 or less
Southern Zone (red): U-Factor of .60 or less, SHGC of .27 or less

Yes, any window or patio door ordered with a LowE glass upgrade will qualify for the Energy Star guidelines for the climate zone where purchased. This guarantee always comes in writing on your contract specifications so you will be assured of ordering and receiving the best LowE glass that is optimized for your particular climate zone.

Yes, you may be eligible to receive a 10% federal tax credit up to $200 for windows and $500 for doors that meet Energy Star guidelines. These credits had expired in 2011 but the new law, “The American Taxpayer Relief Act of 2012” has extended these tax credits to the end of 2013 and retroactively for 2012.

The Window Source provides you with extremely affordable prices on premium vinyl windows because of our large national buying power. also our low prices and easy purchasing process allows us to be extremely efficient and pass the savings along to you.

Yes, a window needs to be properly measured to fit the opening and allow adequate tolerance for pluming and squaring the new window. If the new window is not properly plumbed and squared it will not seal and operate properly no matter how good the quality of the new window.

*The National Fenestration Rating Council (NFRC) U-Factor is a certified measurement of the resistance to conduction of heat and cold by the entire product (frames and glass). The Solar Heat Gain Coefficient (SHGC) is a certified measurement of the ability of a product to keep out unwanted solar heat gain in the cooling season.

The best out of four estimates that I received. Aaron answered all my questions, no matter how small. Usually I wouldn’t go with the first but his down to earth nature made me feel at ease. Aaron and his worker, Steve were great. And my father enjoyed watching the process too! ❤ love my windows!! Thank you so much!

Nikki Indish

Positive: Quality, Responsiveness, Value
super professional installation process, great sales process, these guys really know what they’re doing. Good communication through the whole process and they were done sooner than they told us. Whole house full of replacements and we couldn’t be happier, highly recommend for any size project. When they say and easy, no pressure sales process, they mean it.

Janet Schichtel

I found Window source on Angie’s list. Iam so very happy I went with Aaron. He was prompt in getting here for a estimate . Explained every thing including his 3 pane glass windows. I ordered them the next day. The windows came in on a Wednesday and his man installed them on the next day (Thursday). He was very professional and courtesy and was done that day . I love my new windows they look great and so easy to clean . This company I highly recommend. They are the best and I give them 5 star rating. Thank you Aaron & David!

Nate Bortz

Overall a great experience. Aaron was very prompt, answered many questions, and made the whole window buying experience simple.

Aaron priced us triple pane high efficiency windows for the same price as basic, lower quality double panes from other companies. Installation was quick and communication good throughout the process. I’d recommend them for any window needs!

Andrew Ehlert

We just had The Window Source install 6 new windows and a sliding door. They look fantastic! All the windows are triple pane and are very efficient and high quality. The fact that they were about 1/2 the price of the competition was a sweet bonus! Aaron and his team did a great job and showed up on time and were very professional. And no high pressure sales tactics – very refreshing. I would recommend The window Source to all my friends and family.

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The Window Source

The Window Source is the top choice for best replacement windows, patio doors, roofing and vinyl siding in the Grand Traverse area. We have experienced expert installers and have hundreds of online reviews.